#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;
    cout << n << ":";
    for (int i = 2; n > 1; i++) {
        if (i * i > n) break;
        while (n % i == 0) {
            cout << " " << i;
            n /= i;
        }
    }
    if (n > 1) cout << " " << n;
    cout << endl;
    return 0;
}